I Know What You Did Last Summer is currently streaming in Australia on Amazon Prime Video, and in the US on Amazon Prime Video, and its 6/10 TMDB rating reflects what viewers who've already found it know. A tightly focused run that doesn't overstay its welcome.

The procedural format gives I Know What You Did Last Summer its backbone, but it's the characters you come back for. In a sun-soaked Hawaiian town with a mysterious past, a group of friends is left with a dark secret after a tragic accident. One year later, a member of the group receives a threatening message, and the friends now know that someone intends to make them pay for last summer. Madison Iseman and Bill Heck lead a cast that brings real weight to the material. It aired in 2021.

If you're the type who can't walk away from a good mystery, I Know What You Did Last Summer will keep you watching far longer than you planned.